Search found 499 matches

by Dui, ni shuo de dui
Jan 16 2021 5:25am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Electric Roadster Motorbike
Replies: 50
Views: 2307

Re: Electric Roadster Motorbike

JimVonBaden wrote:
Jan 15 2021 11:31pm
No matter what, make sure you at least clear coat them, or they will begin to corrode.
Yeah, you're right. Actually I'm not sure yet if I'll paint/clear coat or even anodize them since I can have those professionally anodized for cheap, maybe even for free.
by Dui, ni shuo de dui
Jan 14 2021 1:05am
Forum: Battery Technology
Topic: Daly or other BMS for 14s 52V pack
Replies: 7
Views: 208

Re: Daly or other BMS for 14s 52V pack

I'm using the ANT BMS, they are in my opionion better than the Daly, mainly because they have a much higher balancing current (200mA vs 30mA) and because they can work with any number of cells (you can buy a 24S and it will still work if you only use 12S, you are not stuck with the amount of cells y...
by Dui, ni shuo de dui
Jan 13 2021 11:03pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Electric Roadster Motorbike
Replies: 50
Views: 2307

Re: Electric Roadster Motorbike

Well it as the weekend, so I had some spare time, plus I spend most of my evenings in the garage during the week. :wink: I made some interesting progress those past two days. First, I finished the BMS enclosure. I'll just have to add the wires for the screen later, but aside from that it is finished...
by Dui, ni shuo de dui
Jan 12 2021 3:44am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Electric Roadster Motorbike
Replies: 50
Views: 2307

Re: Electric Roadster Motorbike

kuoppis wrote:
Jan 12 2021 3:37am
That BMS enclosure looks really neat! Is it also waterproof?
Yes, I plan to waterproof it using some automotive silicon gasket. It's not necessary since it's not supposed to see rain, but better safe than sorry!
by Dui, ni shuo de dui
Jan 12 2021 2:55am
Forum: Stand-up E-scooters and E-skateboards
Topic: 10kW stand-up scooter with air suspension
Replies: 238
Views: 62603

Re: 10kW stand-up scooter with air suspension

Great to see you back, your new workshop looks amazing!
by Dui, ni shuo de dui
Jan 12 2021 2:42am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Electric Roadster Motorbike
Replies: 50
Views: 2307

Re: Electric Roadster Motorbike

Still working on the BMS: First I soldered the big copper bars. It wasn't as difficult as I thought it would be, I just heated the bars with a blowtorch, heated the BMS with my 100W soldering iron, used plenty of flux and well it worked just fine: IMG_20210108_233659.jpg Next I designed and printed ...
by Dui, ni shuo de dui
Jan 09 2021 5:33am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Electric Roadster Motorbike
Replies: 50
Views: 2307

Re: Electric Roadster Motorbike

Although that controller is so large it will probably never overheat without burning out the motor first, why not rotate the controller so that the aluminium cooling plate is facing the front of the bike and thus the air flow when riding? You could weld tabs/strips to the front down tube to mount t...
by Dui, ni shuo de dui
Jan 08 2021 3:55am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Electric Roadster Motorbike
Replies: 50
Views: 2307

Re: Electric Roadster Motorbike

Makes me question if QS sold me the correct size controller. I simply asked them to provide the matching Kelly controller and I didn't question it as I am still very new to this hobby. I think QS is right becaue they propose you a safe solution. Meaning thats there is little chance for you that any...
by Dui, ni shuo de dui
Jan 07 2021 9:52pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Electric Roadster Motorbike
Replies: 50
Views: 2307

Re: Electric Roadster Motorbike

Some new updates: I received almost all the necessary hardware to get the bike running, yay! New handles: IMG_20210104_185956.jpg New brake pumps: (these are "chinese versions" of brembos, so that was dirt cheap, but they do feel like really nice quality, it was a good find) IMG_20210105_1...
by Dui, ni shuo de dui
Jan 06 2021 9:00pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Electric Roadster Motorbike
Replies: 50
Views: 2307

Re: Electric Roadster Motorbike

Nice build! About that 3d printer. You must be using a 1mm nozzle. What was your layer thickness on the cover? I’m envious as I’d love to print an entire bike wheel, need 600 x 600 min. Have you considered the wax filament for the sand casting that you want to do? Thanks Skaiwerd! On this printer I...
by Dui, ni shuo de dui
Jan 06 2021 8:54pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Electric Roadster Motorbike
Replies: 50
Views: 2307

Re: Electric Roadster Motorbike

Really cool build and amazing rate of progress! I'm impressed If you're worried about the controller providing too much power for the motor, maybe you could try applying some "statorade" to the hub motor - https://ebikes.ca/product-info/grin-products/statorade.html - they claim "you ...
by Dui, ni shuo de dui
Jan 04 2021 8:16pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Electric Roadster Motorbike
Replies: 50
Views: 2307

Re: Electric Roadster Motorbike

Hope you have a hefty torque arm for the motor You're kidding, right? There is a torque plate and the whole steel swing arm is a torque arm :wink: Actually that's a valid question: currently I'm only using the original QS torque plates, which, from my experience, aren't always up to the task when i...
by Dui, ni shuo de dui
Jan 03 2021 9:19pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Electric Roadster Motorbike
Replies: 50
Views: 2307

Re: Electric Roadster Motorbike

Love this build. Well done! Can't wait to see the finished product. Thanks darkmunk, much appreciated! I can't wait to have it finished either, but it's coming along pretty well so far. Some progress over the past week: I worked on a stand for the bike. The original one was really too low so that w...
by Dui, ni shuo de dui
Dec 28 2020 9:56pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Electric Roadster Motorbike
Replies: 50
Views: 2307

Re: Electric Roadster Motorbike

Really taking shape, jealous off your workshop too. My first thought on the NaOH on the fork was make it a thick slurry and paint it on with a brush and wipe off after 5-10 minutes. Ideally less mess and more control over where it touches. I'd get some elbow length gloves before doing it though, ac...
by Dui, ni shuo de dui
Dec 28 2020 10:52am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Electric Roadster Motorbike
Replies: 50
Views: 2307

Re: Electric Roadster Motorbike

I wonder about the inside of the fork tubes, they will probably be treated with something too. Hopefully something more wear resistant. Do you plan to seal them somehow when you do the treatment? Ooohhh that's a really great remark, thanks a lot for bringing it out! I haven't thought about that at ...
by Dui, ni shuo de dui
Dec 27 2020 9:50pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Electric Roadster Motorbike
Replies: 50
Views: 2307

Re: Electric Roadster Motorbike

Thanks Shazzy! I had some more 22mm carbon tubes, and since I'm confident this stuff is very solid now and since the handlebars were the same diameter, I decided to make handlebars out of it. It was easy to make, Just had to cut two bars of the same lenght, then gave both a bit of lathe work to get ...
by Dui, ni shuo de dui
Dec 23 2020 10:22pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Electric Roadster Motorbike
Replies: 50
Views: 2307

Re: Electric Roadster Motorbike

Thanks guys :wink: A bit of progress yesterday, I cut and welded a few little tabs in order to set definitely in place the carbon tubes: IMG_20201223_192648.jpg IMG_20201223_192328.jpg Now the frame mods are almost completed, I just have to make a bracket for the stand and possibly a few brackets in...
by Dui, ni shuo de dui
Dec 22 2020 1:02am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Electric Roadster Motorbike
Replies: 50
Views: 2307

Re: Electric Roadster Motorbike

Yeah, I just finished build it a few weeks ago, it's entirely my own design. If you're interested to see the build thread you can check there: https://forum.v1engineering.com/t/mpcnc-made-in-china-new-build/19393 The print volume is 720 x 720 x 600 mm, and the outside dimensions of the machine are 1...
by Dui, ni shuo de dui
Dec 20 2020 10:13pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Electric Roadster Motorbike
Replies: 50
Views: 2307

Re: Electric Roadster Motorbike

Mhhh, this thread is a bit quiet, feels like I'm just talking to myself here :lol: Anyway, I'll keep talking, in case anyone follows. So there was a bit of progress during the past two weeks: I 3D printed the most gigantic part I ever printed on my new 3D printer: IMG_20201216_151535.jpg This is a f...
by Dui, ni shuo de dui
Dec 14 2020 9:42pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Small space, big power?
Replies: 28
Views: 932

Re: Small space, big power?

Not sure hy there's so much focus on the noise "problem", it's not like it's really important. IMHO chain noise isn't really a nice noise to hear (and I'm a big gas engine noise enthusiast, I even have playlists of engines sounds I like to hear sometimes, so no one can call me a noise hate...
by Dui, ni shuo de dui
Dec 14 2020 8:51pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Small space, big power?
Replies: 28
Views: 932

Re: Small space, big power?

Was a mountain goat as I could stop on a 20% grade and the thing would climb Mt. Everest, good luck doing that on a hub motor. We are talking about a kymco spade here, it's a street bike so that's a very different use case, requiring different specs :wink: Good luck doing both 20% climbs and 130+ k...
by Dui, ni shuo de dui
Dec 14 2020 8:42pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Small space, big power?
Replies: 28
Views: 932

Re: Small space, big power?

I should be able to fit A123 20AH's, but the pack would be incredibly wide for the bike and still have less capacity than the cylindrical options. I assume that by "cylindrical options" you mean 18650 cells that output 3.7V, so not LiFePO4 chemistry. In which case, there's something to be...
by Dui, ni shuo de dui
Dec 14 2020 6:45am
Forum: E-Bike Non-hub Motor Drives
Topic: Light dirt bike, QS 120 70h motor, custom steel frame
Replies: 203
Views: 43385

Re: Light dirt bike, QS 120 70h motor, custom steel frame

Great work and great bike, very well done!
I wish I had your frame building skills!
by Dui, ni shuo de dui
Dec 14 2020 6:20am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Small space, big power?
Replies: 28
Views: 932

Re: Small space, big power?

What are the "many" drawbacks for mid-drive. The only two I can think of are space and having to maintain the chain. Main drawback is of course space, which leads to several subsequent drawbacks: Less battery space means either less capacity and/or less voltage Less voltage usually means ...
by Dui, ni shuo de dui
Dec 13 2020 8:23pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Small space, big power?
Replies: 28
Views: 932

Re: Small space, big power?

Space is definitely going to be very limited, but I knew that when I chose such a tiny motorcycle to convert and then opted not to get a hub motor. My 3KWH target might be too ambitious, and I'm okay with something lower if that's what's necessary. I haven't paid attention to that point: why is it ...